Just like apps and websites implement “Sign in with Apple” and Google couldn’t we build some kind of federated authentication provider? Then everyone creates an account there and fedi apps can implement an easy way to authenticate users. Even non fedi apps could use it. I imagine user interaction between different fediverse platforms would be much easier too.
I guess could run an auth instance. Ideally everyone would run their own, keeping your data safe.
Is there something likes this already? Saw some discussion here but not much else https://socialhub.activitypub.rocks/t/single-sign-on-for-fediverse/712
Before an instance does something malicious, how do you know it will be malicious?
Even if everyone there running it, & participating is pure of heart, how can you be assured that haXXors won’t simply break in to take advantage of that trust you’ve given them?
Banning bad instances is a reactive stance that only applies after damage has been done. Can you convince the corporate overlords to take that risk? And it only increases as the fediverse gets more popular, and more instances get trusted.